APA (7th ed.) Citation

(1982). Gregorian chant: Christmas = Gregorianischer Choral = Chant grégorien. Polydor.

Chicago Style (17th ed.) Citation

Gregorian Chant: Christmas = Gregorianischer Choral = Chant Grégorien. Hamburg: Polydor, 1982.

MLA (9th ed.) Citation

Gregorian Chant: Christmas = Gregorianischer Choral = Chant Grégorien. Polydor, 1982.

Warning: These citations may not always be 100% accurate.